Question

Compare VBT and MOT , and discuss how MOT is superior to VBT .​

Answer 1

VBT = Valence Bond Theory

MOT = Molecular Orbital Theory

Comparison-

$\boxed{\begin{minipage}{15 em} \sf{\underline{VBT - Valence Bond Theory}} \\ \\ .It is a chemical bond theory. \\ \\ .It is used to explain the bonding between two atoms chemically. \\ \\ .It is based on quantum mechanics.\\ \\ .Here the atomic orbitals of individual atoms are combined to form chemical bonds.\\ \\ .It is drawn from Lewis structure. G.N Lewis proposed this structure \\ \\ .It explains how covalent bond form. \end{minipage}} \quad \boxed{\begin{minipage}{15 em} \sf{\underline{\bf{Molecular Orbital Theory}}}\\ \\ .It predicts the placement of electron in a molecule.\\ \\ .Two or more atoms combine together to form molecular orbitals.\\ \\ .Bonding orbital formed - when there is interaction of two atomic orbitals from the same phase. \\ \\ .Anti bonding orbital is formed through different phases.\\ \\ .But anti bonding has high energy than bonding orbitals.\end{minipage}}$

Now,

MOT describes the mixing of orbitals when creating a molecule and also presents an idea to aim group and symmetry of the molecule.

But VBT only localized two atoms, not molecules.

So, MOT is superior to VBT.

Answer 2

Answer:

molecular orbital theory is superior over the valence bond theory as it explains the mixing of orbitals when forming a molecule and also give us information with regard to point group and symmetry of the molecule whereas VBT are based on the Lewis concept whereby the atoms are only localized to two atoms not the

Explanation:

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